[Simon Lloyd]

If your header template is unchanged then it should look like this in 3.7.4 PL1, i have made bold and magenta the line you are looking for.

<!-- logo -->
<a name="top"></a>
<table border="0" width="$stylevar[outertablewidth]" cellpadding="0" cellspacing="0" align="center">
<tr>
	<td align="$stylevar[left]"><a href="$vboptions[forumhome].php$session[sessionurl_q]"><img src="$stylevar[titleimage]" border="0" alt="$vboptions[bbtitle]" /></a></td>
	<td align="$stylevar[right]" id="header_right_cell">
		<if condition="$ad_location['ad_header_logo']">$ad_location[ad_header_logo]<else />&nbsp;</if>
	</td></tr>
</table>
<!-- /logo -->

<!-- content table -->
$spacer_open

$_phpinclude_output

$ad_location[ad_header_end]

If you want you can mail me the templates you want the code adding to and i will do them over the next few days (work willing), pm me for e-mail address.